H. ‘Diablo’

Overview

Registered in 2012 by an unknown breeder, Hosta 'Diablo' is a medium-sized cultivar distinguished by its intensely blue-green, broadly ovate leaves with slightly rippled margins and a prominent glaucous bloom on both surfaces. The plant forms a dense, mound-like clump that reaches 18 inches (45.7 cm) in height and 38 inches (96.5 cm) in diameter, with a fast growth rate.

In the Garden

'Diablo' performs best in partial to full shade, typical of most hostas, where its blue-green foliage retains its color and glaucous coating. At maturity, this medium-sized cultivar spreads nearly 3 feet wide, making it suitable for mid-border positions, woodland gardens, or as a specimen in shaded beds. It pairs well with ferns, astilbes, and other shade-tolerant perennials, and its moderate leaf waviness adds textural interest without overwhelming neighboring plants.

Care Notes

Provide consistent moisture, especially during dry periods, and apply a balanced fertilizer in early spring as new growth emerges. Like most blue-leaved hostas, 'Diablo' is susceptible to slug and deer damage, so protective measures may be necessary in areas where these pests are prevalent.